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/*******************************************************************************
* Copyright (c) 2011 Wind River Systems, Inc. and others. All rights reserved.
* This program and the accompanying materials are made available under the terms
* of the Eclipse Public License v1.0 which accompanies this distribution, and is
* available at http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Wind River Systems - initial API and implementation
*******************************************************************************/
package org.eclipse.tcf.te.tcf.locator.internal.adapters;
import java.io.IOException;
import java.net.URI;
import java.util.LinkedHashMap;
import java.util.Map;
import org.eclipse.core.runtime.Assert;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.Path;
import org.eclipse.tcf.protocol.IPeer;
import org.eclipse.tcf.te.runtime.persistence.interfaces.IPersistable;
import org.eclipse.tcf.te.tcf.locator.activator.CoreBundleActivator;
/**
* Persistable implementation handling peer attributes.
*/
public class MapPersistableAdapter implements IPersistable {
/* (non-Javadoc)
* @see org.eclipse.tcf.te.runtime.persistence.interfaces.IPersistable#getStorageID()
*/
@Override
public String getStorageID() {
return "org.eclipse.tcf.te.tcf.locator.persistence"; //$NON-NLS-1$
}
/* (non-Javadoc)
* @see org.eclipse.tcf.te.runtime.persistence.interfaces.IPersistable#getURI(java.lang.Object)
*/
@SuppressWarnings("unchecked")
@Override
public URI getURI(final Object data) {
Assert.isNotNull(data);
URI uri = null;
// Only map objects are supported
if (data instanceof Map) {
// Get the name of the peer and make it a valid
// file system name (no spaces etc).
String name = ((Map<String, String>) data).get(IPeer.ATTR_NAME);
if (name == null) name = ((Map<String, String>) data).get(IPeer.ATTR_ID);
name = makeValidFileSystemName(name);
// Get the URI from the name
uri = getRoot().append(name).toFile().toURI();
}
return uri;
}
/**
* Make a valid file system name from the given name.
*
* @param name The original name. Must not be <code>null</code>.
* @return The valid file system name.
*/
private String makeValidFileSystemName(String name) {
Assert.isNotNull(name);
return name.replaceAll("\\W", "_"); //$NON-NLS-1$ //$NON-NLS-2$
}
/**
* Returns the root location of the peers storage.
*
* @return The root location or <code>null</code> if it cannot be determined.
*/
public IPath getRoot() {
IPath location = null;
// Try the bundles state location first (not available if launched with -data @none).
try {
IPath path = CoreBundleActivator.getDefault().getStateLocation().append(".peers"); //$NON-NLS-1$
if (!path.toFile().exists()) path.toFile().mkdirs();
if (path.toFile().canRead() && path.toFile().isDirectory()) {
location = path;
}
} catch (IllegalStateException e) {
// Workspace less environments (-data @none)
// The users local peers lookup directory is $HOME/.tcf/.peers.
IPath path = new Path(System.getProperty("user.home")).append(".tcf/.peers"); //$NON-NLS-1$ //$NON-NLS-2$
if (!path.toFile().exists()) path.toFile().mkdirs();
if (path.toFile().canRead() && path.toFile().isDirectory()) {
location = path;
}
}
return location;
}
/* (non-Javadoc)
* @see org.eclipse.tcf.te.runtime.persistence.interfaces.IPersistable#getInterfaceType(java.lang.Object)
*/
@Override
public String getInterfaceTypeName(Object data) {
if (data instanceof Map) {
// No bundle id needed here, it's a POJO
return Map.class.getName();
}
return null;
}
/* (non-Javadoc)
* @see org.eclipse.tcf.te.runtime.persistence.interfaces.IPersistable#exportFrom(java.lang.Object)
*/
@SuppressWarnings("unchecked")
@Override
public Map<String, Object> exportFrom(Object data) throws IOException {
Assert.isNotNull(data);
Map<String, Object> result = null;
// Only map objects are supported
if (data instanceof Map) {
// Convert into a String/Object map to pass it on to the persistence delegates
result = new LinkedHashMap<String, Object>();
for (String key : ((Map<String, String>) data).keySet()) {
if (!key.endsWith(".transient")) { //$NON-NLS-1$
result.put(key, ((Map<String, String>) data).get(key));
}
}
}
return result;
}
/* (non-Javadoc)
* @see org.eclipse.tcf.te.runtime.persistence.interfaces.IPersistable#importTo(java.lang.Object, java.util.Map)
*/
@Override
public void importTo(Object data, Map<String, Object> external) throws IOException {
Assert.isNotNull(data);
Assert.isNotNull(external);
// Only map objects are supported
if (data instanceof Map) {
@SuppressWarnings("unchecked")
Map<String, String> map = (Map<String, String>)data;
for (String key : external.keySet()) map.put(key, (String)external.get(key));
}
}
}
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